I have seen this has been posted at various other forums recently but not here. So, I make the post and here it is:-
Review: Dust removal systems / sensor cleaning - Pixinfo.com
As quoted:
"Dust removal conclusion
Here is our ranking according to effectiveness:
1. Olympus: good
2. Canon: poor (we are disappointed)
3. Pentax and Sony: useless (we are very disappointed)"
Also, in the field, as quoted:
"Pentax K10D
Part of the reason we started to organize this test was that we had a bad experience with the dust removal system of Pentax K10D that we had for our review.?Although the amplitude of the CCD movement is quite high (one can feel the shake on his hand), the frequency is rather low."
Hope you find the info interesting and useful!
I hope that the next Pentax DSLR should have a totally new design of DR system instead of the cloned useless Sony design! Actually, Pentax have filed a patent of their own for a vacuum air suction design which sucks dust particles out of the camera body! I bet by using their own design of this, the dust removal effectiveness will be close to air-blower and this will blow away the Olympus's design in effectiveness.
Some days if Pentax really adopt their own original design, I bet probably it will work, instead of the DR in the K10D which is considered to be useless, and, not working as what is marketed and claimed, which of course is undoubtedly very disappointing to many users.